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(June 30) Today we're celebrating . . .  Leap Second Adjustment Time

06302007t.jpgLeap Second Adjustment Time
A leap second can be added, or subtracted, twice a year to keep time in sync with the atomic clock time.

The second is added, or subtracted, at midnight on June 30th and January 31st.

Although a…leap second is “added” at midnight, its effect actually slows down the atomic clock by one second…since a…leap second represents an extra second that must be counted before the new day can begin.



This entry was posted on Monday, June 30th, 2008 at 12:10 am and is filed under Dailys, General. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

One Response to “(June 30) Today we're celebrating . . .  Leap Second Adjustment Time”

  1. Alex Says:
    December 21st, 2008 at 12:58 am

    Hi, i was looking for a good picture for the end of the year when i felt on this excellent explanation of a leap second. Unfortunately with the picture shown above we are not leaping 1 second but 2 seconds. Shouldn’t it 12:59:60 instead of 12:59:61

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